50mi ultra marathons in Colorado, United States
20 races
Mace's Hideout 100
Jun 7, 2025 (Sat)
Beulah, Colorado, United States
2.2 - 2.9
$482.75
Red, White, and Brew
Jun 21, 2025 (Sat)
Windsor, Colorado, United States
San Juan Solstice
Jun 21, 2025 (Sat)
Lake City, Colorado, United States
1.8
$269.75
Silverheels Trail Runs
Jul 11-12, 2025 (Fri-Sat)
Fairplay, Colorado, United States
1.7 - 2.7
$180
Silver Rush 50
Jul 12-13, 2025 (Sat-Sun)
Leadville, Colorado, United States
1.6
Pikes Peak Ultra
Jul 26, 2025 (Sat)
Colorado Springs, Colorado, United States
1.4 - 1.8
$205.85 - $243.12
Grand Mesa Ultras
Jul 26, 2025 (Sat)
Grand Mesa, Colorado, United States
1.4 - 1.8
$141.95 - $163.25
NoCo Urban Ultra & Relay
Aug 22-23, 2025 (Fri-Sat)
Fort Collins, Colorado, United States
1.7 - 2.5
Run Rabbit Run
Sep 12-13, 2025 (Fri-Sat)
Steamboat Springs, Colorado, United States
1.7 - 2.5
$386.9 - $615.87
Ouray 50 Mile Endurance Run
Sep 13, 2025 (Sat)
Ouray, Colorado, United States
2.3
$296.37
Red Feather Trail Jamboree
Sep 26-28, 2025 (Fri-Sun)
Red Feather Lakes, Colorado, United States
1.3 - 2
$300
Crested Butte Ultra
Sep 27, 2025 (Sat)
Crested Butte, Colorado, United States
1.3 - 1.9
$211.17 - $243.12
Sangre de Cristo Trail Festival
Sep 27-28, 2025 (Sat-Sun)
Westcliffe, Colorado, United States
1.4 - 2.8
The Bear Chase
Oct 4-5, 2025 (Sat-Sun)
Lakewood, Colorado, United States
1 - 1.9
$157.92 - $211.17
Colorado 24 Hour Run
Nov 1, 2025 (Sat)
Fort Collins, Colorado, United States
Kessel Run Ultra
Nov 8, 2025 (Sat)
Fruita, Colorado, United States
1.5 - 1.9
$184.55 - $221.82
Falcon 50
May 2, 2026 (Sat)
Colorado Springs, Colorado, United States
$66.25
Collegiate Peaks Trail Run
May 2, 2026 (Sat)
Buena Vista, Colorado, United States
1.9
$173.9
Quad Rock 50
May 9, 2026 (Sat)
Bellvue, Colorado, United States
2.4
North Fork 50 Mile/50K
May 30, 2026 (Sat)
Buffalo Creek, Colorado, United States
1.1 - 1.8
$195.2 - $216.5
Showing 1 - 20 of 20 events